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UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: C.C.S. on February 06, 2009, 11:45:37 pm

Title: 300gpd or ro merlin?
Post by: C.C.S. on February 06, 2009, 11:45:37 pm: which of these 2 you reckon is the best kit to purify the water?and where is the best and cheap place you can buy them?thanks
Title: Re: 300gpd or ro merlin?
Post by: windowwashers on February 07, 2009, 12:14:36 am: Quote from: J&A Cleaning Services on February 06, 2009, 11:45:37 pm
which of these 2 you reckon is the best kit to purify the water?and where is the best and cheap place you can buy them?thanks
4040 is the best, but then a merlin, then a 300gpd
Title: Re: 300gpd or ro merlin?
Post by: pingu on February 07, 2009, 08:32:54 am: Windowwashers why is a 4040 type membrane system better than a Merlin?

Cheers
Dave.
Title: Re: 300gpd or ro merlin?
Post by: Xline Systems on February 07, 2009, 08:52:58 am: i would recomend a 300gpd in harder water areas! if you have a tds less than 220 i would recomend a merlin. much faster water production out of a merlin system
Title: Re: 300gpd or ro merlin?
Post by: Slash on February 07, 2009, 12:42:15 pm: I few years ago I was advised by Pure Freedom to get a 300 gpd rather than a 720 gpd merlin,I am in a hard water area and my TDS is 250,the merlin would produce water quicker than the 300gpd but I would use alot more resin with the merlin and my preasure is 35-40 psi.
Title: Re: 300gpd or ro merlin?
Post by: jonisondell on February 07, 2009, 12:59:49 pm: you need to concider the following, filter costs and water rejection rate if you are on a meter, merlin has a high rejection and expensive filters but production rate is good, 4040 best option

i think slash is a bit confused with resin usage, the resin usage depends on the output tds of the filters....
example
merlin output tds 004
300 output tds 005

then the 300 would use more resin
Title: Re: 300gpd or ro merlin?
Post by: kris martin on February 07, 2009, 06:10:22 pm: where can i get replacement filters for my RO 300gpd

cheers

kris
Title: Re: 300gpd or ro merlin?
Post by: Slash on February 07, 2009, 06:38:01 pm: Pure Freedom or RO-MAN ,try Ebay.
Title: Re: 300gpd or ro merlin?
Post by: Nathanael Jones on February 07, 2009, 07:19:29 pm: Merlins (like many RO's) don't work well in low pressure area's. You can get low pressure membranes for 4040's,.. not for merlins though.
:(
Title: Re: 300gpd or ro merlin?
Post by: sparklebright on February 07, 2009, 07:47:59 pm: It depends how much water you need.
I had a merlin my psi is 45 and it produced a lot of water all at 66ppm, I used loads of resin.
I now use a 300 gpd. It makes 1000 litres a day @ 8ppm, with a booster pump. I have 2 x 1000 litre tanks for storage and that's enough for two vans, if ran 24/7.
If I needed more I would use a 4040.
Title: Re: 300gpd or ro merlin?
Post by: windowwashers on February 08, 2009, 12:09:33 am: Quote from: pingu on February 07, 2009, 08:32:54 am
Windowwashers why is a 4040 type membrane system better than a Merlin?

Cheers
Dave.
can produce more water quicker is the main benifit, water pressure , I hear from a lot of people how long it takes them to make water, I have had a merlin i sold it, I have had a 300gpd i sold that aswell, I give my opinion on what I have found m8. I started out with a 4040 but got the others to see.

Ian